kingdom Plantae - plants »  divisio Magnoliophyta - flowering plants »  class Rosopsida - eudicots » order Malpighiales »  family Violaceae »  tribus Violeae > genus Viola > Viola sect. Viola  L. > Viola subsect. Rostratae Kupffer    

Viola kusanoana Makino 

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Common names:  オオタチツボスミレ oh-tachi-tsubo-sumire [large electing Inkpot viola] ; Фиалка Кусано ; 큰졸방제비꽃 

Description: Perennial herb. Rhizomes long, lignified and thicken. Several stems and a height of 25 (40) cm in the fruit stage. Leaf blade cordate, 3-5 cm long, lower leaf blunt, upper leaf sharply sharp, low serrations, base heart-shaped. The stipule at the lower part of the stem is deeply split in a wing shape, but the upper part is less cut and shallower. White or pale, 6-8 mm long flowers, usually axillary on the stem. Petals 15-18 mm long and the lateral petals have no normal hair. Sepals are lanceolate. 

Distributional Range: Native Asia-Temperate RUSSIAN FAR EAST: Russian Federation [Kurile Islands, Sakhalin] EASTERN ASIA: Japan, [Hokkaidô, Honshu, Kyushu, Shikoku] Korea, South [Kyongsang Puk (Ulleung-do)]

Habitat: In  forest edges and bright forest floors in snowy areas 

References:

1. Czerepanov, S. K. 1995. Vascular plants of Russia and adjacent states (the former USSR) Cambridge University Press.

2. Igari, M. 1996. Wild violets of Japan Note: book almost entirely in Japanese

3. Iwatsuki, K. et al. 1993-. Flora of Japan.

4. Lee, Y. N. 1997. Flora of Korea.

5. Ohwi, J. 1965. Flora of Japan (Engl. ed.).